Title :
BLDC spindle motor cogging torque calculation with the moving material method in the finite element method
Author :
Won, S.-H. ; Lee, J.
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
Instead of the moving band method, which is widely used when someone wants to perform a FEM calculation considering the rotation, a novel moving material method was proposed that makes the demand of HDD memory capacity smaller and the calculation time faster not by changing the mesh but by rotating the material properties in the magnet area. These results are especially useful to researchers who try to analyze the BLDC spindle motor considering the rotation of the outer rotor comprising a ring magnet and a back-yoke.
Keywords :
brushless DC motors; disc drives; finite element analysis; hard discs; torque; BLDC spindle motor cogging torque calculation; FEM calculation; HDD memory capacity; back-yoke; finite element method; moving band method; moving material method; outer rotor; ring magnet; Armature; Brushless DC motors; Finite element methods; Forging; Magnetic flux; Magnetic materials; Material properties; Rotors; Stators; Torque;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463798